ANALISIS HUBUNGAN SUHU PERMUKAAN LAUT DAN KLOROFIL-A CITRA SATELIT SUOMI NPP VIIRS TERHADAP HASIL TANGKAPAN PURSE SEINE DI PPN PENGAMBENGAN, BALI (Analysis of the Relationship of Sea Surface Temperature and Chlorophyll-a The Suomi NPP VIIRS Satellite Image Against the Catch of the Seine Purse in PPN Pengambengan, Bali)

Abstract

ABSTRAKPerikanan Tongkol (Euthynnus affinis) di Perairan Selat Bali berkembang pesat sejak diperkenalkannya alat tangkap Purse seine, hal tersebut menyebabkan semakin meningkatnya jumlah armada kapal penangkap ikan. Meskipun upaya penangkapan meningkat, akan tetapi hasil tangkapan yang didapatkan menurun. Untuk tujuan tersebut diperlukan kajian yang mendalam tentang pola sebaran suhu permukaan laut dan klorofil-a, agar ke depan dapat diketahui daerah penangkapan ikan Tongkol. Penelitian ini mengkaji perbedaan nilai persebaran SPL dan klorofil-a yang secara nyata di lapangan dengan data hasil interpretasi citra satelit Suomi NPP VIIRS, serta mengetahui hubungan distribusi SPL dan klorofil-a terhadap hasil tangkapan ikan Tongkol (Euthynnus affinis). Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Hasil yang didapatkan pada penelitian ini adalah, tingkat akurasi citra satelit Suomi NPP VIIRS pada variabel suhu permukaan laut mencapai 98,98%, sementara untuk tingkat akurasi terhadap konsentrasi klorofil-a mencapai 95,63%. Hubungan suhu permukaan laut dan klorofil-a terhadap CPUE yaitu menunjukan pengaruh yang cukup kuat dengan nilai sebesar 0,585. Nilai r 2 menunjukan nilai sebesar 34,3%, yang berarti bahwa sebesar 34,3% CPUE dipengaruhi oleh suhu permukaan laut dan klorofil-a, sedangkan 65,7% dipengaruhi oleh faktor-faktor lain Kata kunci: Perairan Selat Bali, Suhu Permukaan Laut, Kloroil-a, CPUE. ABSTRACT Eastern Little Tuna (Euthynnus affinis) in the Waters of Bali Strait has been growing rapidly since the introduction of purse seinefishing gear, this has led to an increasing number of fishing vessels. Although the fishing effort increases, the catch obtained decreases. For this purpose an in depth study of the distribution patterns of sea surface temperature and chlorophyll-a is needed, so that in the future it can be known the fishing ground to assist in the effective and efficient utilization of fish resources. This study examines the differences in the value of the distribution of sea surface temperature and chlorophyll-a that are evident in the field with data from interpretation of Somi NPP VIIRS satellite images, and knowing the relationship between the distribution of sea surface temperature and chlorophyll-a to the Eastern Little Tuna catches. The method used in this research is descriptive method. The results obtained in this study are, the accuracy of the Suomi NPP VIIRS satellite image on the variable sea surface temperature reaches 98.98%, while the level of accuracy of the chlorophyll-a concentration reached 95.63%, the relationship between sea surface temperature and chlorophyll-a on CPUE is a fairly strong correlation, with a correlation value of 0,585. The value of r 2 means that 34.3% CPUE is influenced by sea surface temperature and chlorophyll-a, while 65.7% is influenced by other factors..

Analysis of Fringescale Sardine Fishing Grounds (Sardinella fimbriata) Based on Sea Surface Temperature and Chlorophyll-A in Tegal Waters, Indonesia

“…3, high chlorophyll-a concentrations in April 2019 and 2020 will be followed by high catches in the following 2-3 months. According to Ghufron et al [7] and Syahdan et al [11], the value of chlorophyll-a concentration found in waters can be used as an indication to determine the abundance of fish resources in the sea, but sometimes it is also not directly proportional to the catch obtained. This is because chlorophyll-a takes time to be eaten first by herbivorous fish.…”

“…Satellite imagery data that has been obtained requires verification with in situ data so that the data obtained becomes more accurate. According to Ghufron et al [7], stating that satellite image data is needed verification with in situ data so that the value of accuracy and feasibility of a data is known. The step to verification is to correct relative errors.…”

Fish behavior based on the effect of variations in oceanographic condition variations in FADs Area of Bone Bay Waters, Sulawesi, Indonesia

“…Several studies have tried to examine the effect of oceanographic parameters such as surface temperature, currents, salinity, and chlorophyll-a concentration based on remote sensing and geographic Information systems (Arrizabalaga et al 2015;Ghufron et al 2019;Seloi et al 2019) and information based on local knowledge of fishermen (Moreno et al 2007;Macusi et al 2017;Jauharee et al 2021), including the use of GPS buoys to FADs (Irineo et al 2014;Lopez et al 2014;Maufroy et al 2016), providing initial information on potential pelagic fishing zones and habitat distribution of fish in the fishing ground. The results of this study also provide a general description of the influence of oceanographic parameters on fish distribution, but the scope of the research is still for a large area and has not been able to provide a more specific description of the behavior of fish in the FADs area itself as a media for purse seine catching aids.…”

Studi Karakteristik Suara Secara Temporal yang Mempengaruhi Agregasi Schooling Ikan pada Areal Rumpon

“…Secara umum keberadaannya kawanan ikan dengan agregasinya, karena pengaruh faktor fisika dan kimia khususnya kondisi oseanografi suatu wilayah (Arrizabalaga et al, 2015;Seloi et al, 2019;Ghufron et al, 2019), ditinjau dari aspek biologi keberadaan spesies ikan pada areal rumpon tersebut memang ada hubungannya (Bubun et al, 2015;Irawati et al, 2021), yang dapat mempengaruhi agresi dan tingkah laku ikannya (Capello et al, 2016;Lopez et al, 2017;Orue, et al, 2019).…”